/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Increments the metadata version
void IncrementMetadataVersion ( const [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) & InKey, const [FName](API\Runtime\Core\UObject\FName) & InName )